Question

public static Object[] question4(Student student1, Student student2)
{
/* For this exercise you will be using for loops to calculate various values.
You will be making use of the following object references which are passed as arguments to this method:
A Student object reference student1
A Student object reference student2
You will need to use various accessor methods of the Student class to complete this assignment.
Additional variables that you will use have already been declared.

1) Set the value of student1HighestGrade to the highest grade for student1
2) Set the value of student2HighestGrade to the highest grade for student2
3) Set the value of student1AverageGrade to the average grade for student1
4) Set the value of student2AverageGrade to the average grade for student2
5) Assign the bestHighGradeStudent object reference whichever student has the best high grade
6) Assign the bestAverageGradeStudent object reference whichever student has the best average grade

This program contains a main method that can be used to manually test your code by right-clicking Question4.java
and selecting "Run File"   
*/
  
int student1HighestGrade, student2HighestGrade;
double student1AverageGrade, student2AverageGrade;
Student bestAverageGradeStudent, bestHighGradeStudent;
  
// Your code goes Here:
  
  
  
  
  
  
  
  

  
// Necessary for Unit Test
return new Object[] {student1HighestGrade, student2HighestGrade, student1AverageGrade, student2AverageGrade, bestHighGradeStudent, bestAverageGradeStudent};
}
  
public static void main(String[] args)
{
Student s1 = new Student();
Student s2 = new Student();
s2.setName("John Doe");
  
System.out.println("Student1: " + s1);
System.out.println("Student2: " + s2);
  
Object[] o = question4(s1, s2);
  
System.out.println("student1HighestGrade = " + (int)o[0]);
System.out.println("student2HighestGrade = " + (int)o[1]);
System.out.println("student1AverageGrade = " + (double)o[2]);
System.out.println("student2AverageGrade = " + (double)o[3]);
System.out.println("bestHighGradeStudent = " + ((Student)o[4]).getName());
System.out.println("bestAverageGradeStudent = " + ((Student)o[5]).getName());
}
}

here is student class

package ProvidedClasses;

import java.util.Objects;
import java.util.Random;

public class Student
{
private String studentName;
private int studentID;
private int[] examScores = new int[8];
  
/**
* Construct a Student object with the following default values:
* studentName = "John Doe"
* studentID = 1111111;
*   
*/
public Student()
{
studentName = "Jane Doe";
studentID = 0012345;
  
Random rand = new Random();
  
for (int i = 0; i < 8; i++)
{
examScores[i] = rand.nextInt(26) + 75;
}
}
  
/**
*
* @param name A String representing the student's name.
* @param ID An int representing the student's ID number.
*/
public Student(String name, int ID)
{

setName(name);
setID(ID);
for (int i = 1; i <= 8; i++)
{
this.setExamScore(i-1, 0);
}
  
}
  
public static Student getAStudentInstance()
{
Student s = new Student("Suzy Q", 1010156);
for (int i = 1; i <=8; i++)
{
s.setExamScore(i-1, 90 + i);
}
  
return s;
}
  
public static Student getBStudentInstance()
{
Student s = new Student("Joey D", 2349817);
for (int i = 1; i <=7; i++)
{
s.setExamScore(i-1, 76 + (i * 2));
}
  
s.setExamScore(7, 100);
  
return s;
}
  
/**
*
* @param newName A String representing the new value to set the student's name to.
*/
public void setName(String newName)
{
studentName = newName;
}
  
/**
*
* @param newID An int representing the new value to set the student's ID to.
*/
private void setID(int newID)
{
studentID = Math.abs(newID % 10000000);
}
  
  
/**
*
* @param index The index of the exam to get (Should be 0 - 7 inclusive).
* @param score The score for the exam.
*/
public void setExamScore(int index, int score)
{
examScores[index] = score;
}
  
/**
*
* @return The name of the student.
*/
public String getName()
{
return studentName;
}
  
/**
*
* @return The ID number of the student.
*/
public int getID()
{
return studentID;
}
  
/**
*
* @param index The index to get the score for. Should only be 0 - 7 inclusive.
* @return The score for the specified exam.
*/
public int getExamScore(int index)
{
return examScores[index];
}
  

  
/**
*
* @param o An Object to check against for equality
* @return Whether or not the Student object is equal to the o
*/
@Override
public boolean equals(Object o)
{
if (o instanceof Student)
{
Student s = (Student)o;
return (studentName.equals(s.getName()) && studentID == s.getID());
}
return false;
}

/**
*
* @return An int representing the hash of the object.
*/
@Override
public int hashCode() {
int hash = 7;
hash = 59 * hash + Objects.hashCode(this.studentName);
hash = 59 * hash + this.studentID;
return hash;
}

/**
*
* @return A String representing the object.
*/
@Override
public String toString()
{
String toReturn = "(" + studentName + ", " + studentID + ", [";
for (int grade : examScores)
{
toReturn += grade + ", ";
}
toReturn += "])";
  
return toReturn;
}
}

Answer 1

Completed function code:

   public static Object[] question4(Student student1, Student student2){
   /* For this exercise you will be using for loops to calculate various values.
   You will be making use of the following object references which are passed as arguments to this method:
   A Student object reference student1
   A Student object reference student2
   You will need to use various accessor methods of the Student class to complete this assignment.
   Additional variables that you will use have already been declared.

   1) Set the value of student1HighestGrade to the highest grade for student1
   2) Set the value of student2HighestGrade to the highest grade for student2
   3) Set the value of student1AverageGrade to the average grade for student1
   4) Set the value of student2AverageGrade to the average grade for student2
   5) Assign the bestHighGradeStudent object reference whichever student has the best high grade
   6) Assign the bestAverageGradeStudent object reference whichever student has the best average grade

   This program contains a main method that can be used to manually test your code by right-clicking Question4.java
   and selecting "Run File"   
   */
  
   int student1HighestGrade, student2HighestGrade;
   double student1AverageGrade, student2AverageGrade;
   Student bestAverageGradeStudent, bestHighGradeStudent;
  
   // Your code goes Here:
  
  
  
   //FINDING HIGHEST GRADE OF STUDENT 1
   student1HighestGrade = -1;   //initially set to minimum
   //iterating through all 8 grades
   for(int i = 0; i < 8; i++){
       //current highest grade is less than ith grade
       if(student1.getExamScore(i) > student1HighestGrade){
           //making ith grade as the highest grade
           student1HighestGrade = student1.getExamScore(i);
       }
   }
  
   //FINDING HIGHEST GRADE OF STUDENT 1
   student2HighestGrade = -1;   //initially set to minimum
   //iterating through all 8 grades
   for(int i = 0; i < 8; i++){
       //current highest grade is less than ith grade
       if(student2.getExamScore(i) > student2HighestGrade){
           //making ith grade as the highest grade
           student2HighestGrade = student2.getExamScore(i);
       }
   }
  
   //FINDING THE GRADE SUM OF STUDENT 1
   student1AverageGrade = 0;   //setting grade sum as 0 initially
   //iterating through all 8 grades
   for(int i = 0; i < 8; i++){
       //adding ith grade to tha total grade sum
       student1AverageGrade += student1.getExamScore(i);
   }
   //FINDING THE AVERAGE GRADE OF STUDENT 1
   student1AverageGrade /= 8;
  
  
   //FINDING THE GRADE SUM OF STUDENT 2
   student2AverageGrade = 0;   //setting grade sum as 0 initially
   //iterating through all 8 grades
   for(int i = 0; i < 8; i++){
       //adding ith grade to tha total grade sum
       student2AverageGrade += student2.getExamScore(i);
   }
   //FINDING THE AVERAGE GRADE OF STUDENT 2
   student2AverageGrade /= 8;
  
  
   //FINDING THE BEST HIGHEST GRADE STUDENT
   if(student1HighestGrade > student2HighestGrade){
       //student1's highest grade is greater than student2's highest grade
       //Best highest grade student is student1
       bestHighGradeStudent = student1;
   }
   else{
       //Best highest grade student is student2
       bestHighGradeStudent = student2;
   }
  
  
   //FINDING THE BEST AVERAGE GRADE STUDENT
   if(student1AverageGrade > student2AverageGrade){
       //student1's average grade is greater than student2's highest grade
       //Best average grade student is student1
       bestAverageGradeStudent = student1;
   }
   else{
       //Best average grade student is student2
       bestAverageGradeStudent = student2;
   }
  
  
  
   // Necessary for Unit Test
   return new Object[] {student1HighestGrade, student2HighestGrade, student1AverageGrade, student2AverageGrade, bestHighGradeStudent, bestAverageGradeStudent};
   }

Full Code Screenshot (highlighted the important parts of the code):

Output: